Clive Catchpole is currently Professor of Animal Behaviour at Royal Holloway, University of London. He has written, broadcast and researched on many aspects of bird ecology and behaviour for more than 30 years and published over 100 books, articles and scientific papers. He has studied birds in many parts of the world and been a visiting researcher at the Max-Planck-Institute for Ornithology in Germany and the California Academy of Sciences in the USA.